{8064} Primeשָׁמַיִםshamayim{shaw-mah'-yim}The second form being dual of an unused singular; from an unused root meaning to be lofty; the sky (as aloft; the dual perhaps alluding to the visible arch in which the clouds move, as well as to the higher ether where the celestial bodies revolve).

(0853) Complementאֵת'eth{ayth}Apparently contracted from H0226 in the demonstrative sense of entity; properly self (but generally used to point out more definitely the object of a verb or preposition, even or namely).

{3220} Primeיָםyam{yawm}From an unused root meaning to roar; a sea (as breaking in noisy surf) or large body of water; specifically (with the article) the Mediterranean; sometimes a large river, or an artificial basin; locally, the west, or (rarely) the south.

Psalms 146:6

For ever  Both because he liveth for ever to fulfil his promises, and because he is eternally faithful.

Psalms 146:6

Which made (d) heaven, and earth, the sea, and all that therein [is]: which keepeth truth for ever:

(d) He encourages the godly to trust only in the Lord, both in his power's ability to deliver them from all danger, and for his promise sake, as his will is most ready to do it.

made heaven:

Psalms 33:6By the word of the LORD were the heavens made; and all the host of them by the breath of his mouth.Psalms 136:5-6 To him that by wisdom made the heavens: for his mercy [endureth] for ever. ... To him that stretched out the earth above the waters: for his mercy [endureth] for ever.Psalms 148:5-6 Let them praise the name of the LORD: for he commanded, and they were created. ... He hath also stablished them for ever and ever: he hath made a decree which shall not pass.Genesis 1:1 In the beginningGod created the heaven and the earth.Jeremiah 10:11-12Thus shall ye say unto them, The gods that have not made the heavens and the earth, [even] they shall perish from the earth, and from under these heavens. ... He hath made the earth by his power, he hath established the world by his wisdom, and hath stretched out the heavens by his discretion.Jeremiah 32:17Ah Lord GOD! behold, thou hast made the heaven and the earth by thy great power and stretched out arm, [and] there is nothing too hard for thee:John 1:3 All things were made by him; and without him was not any thing made that was made.Colossians 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether [they be] thrones, or dominions, or principalities, or powers: all things were created by him, and for him:Revelation 14:7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.

the sea:

Psalms 95:5The sea [is] his, and he made it: and his hands formed the dry [land].Exodus 20:11 For [in] six days the LORD made heaven and earth, the sea, and all that in them [is], and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.Job 38:8-11 Or [who] shut up the sea with doors, when it brake forth, [as if] it had issued out of the womb? ... And said, Hitherto shalt thou come, but no further: and here shall thy proud waves be stayed?Proverbs 8:28-29 When he established the clouds above: when he strengthened the fountains of the deep: ... When he gave to the sea his decree, that the waters should not pass his commandment: when he appointed the foundations of the earth:

keepeth truth:

Psalms 89:2 For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens.Psalms 89:33Nevertheless my lovingkindness will I not utterly take from him, nor suffer my faithfulness to fail.Psalms 98:3 He hath remembered his mercy and his truth toward the house of Israel: all the ends of the earth have seen the salvation of our God.Psalms 100:5For the LORD [is] good; his mercy [is] everlasting; and his truth [endureth] to all generations.Deuteronomy 7:9 Know therefore that the LORD thy God, he [is] God, the faithful God, which keepeth covenant and mercy with them that love him and keep his commandments to a thousand generations;Daniel 9:4 And I prayed unto the LORD my God, and made my confession, and said, O Lord, the great and dreadful God, keeping the covenant and mercy to them that love him, and to them that keep his commandments;Micah 7:20 Thou wilt perform the truth to Jacob, [and] the mercy to Abraham, which thou hast sworn unto our fathers from the days of old.John 10:34 Jesus answered them, Is it not written in your law, I said, Ye are gods?Titus 1:2In hope of eternal life, which God, that cannot lie, promisedbefore the world began;Hebrews 6:18 That by two immutable things, in which [it was] impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hopeset before us: